Why Is It Difficult for Psychologists to Define the Specific

Multiple Choice

Why is it difficult for psychologists to define the specific genes involved in disorders like depression and schizophrenia?

A) The specific gene that causes each disorder is usually the same.
B) A person with a disorder like depression or schizophrenia tends to have a much higher number of genes than a person without such a disorder.
C) There are likely numerous genes that influence the various symptoms of each disorder.
D) It is difficult to distinguish a depressed person from a person who is schizophrenic.